Fruit preparation machine



A nl 21, 1959- w; DE BACK ETAL 2,882,945

I FRUIT PRQIPARATION MACHINE Original Filed se t. 6, 1949 14 Sheets- Sheet 2 .1 a we lNVENTORS WILLIAM DE 846K SYLVIO PUGG/NELLI ATTQRNEY vl4 Shee'ts-Shet 3 W. DE BACK ETAL FRUIT PREPARATION MACHINE N u w M n G E N a o m E W 9 0 9 c m Q 0 w p w 0 m m M 0 Q A 0 H. w mm. n 0 u u 9 W S 0 Q Q Q me O NON b Q mu a o I O a w o w .l ll\|ilhl o m 0 ufl NNV Q I m o om. 0 WW 0 mm? 0 5w 0 ow wi Q9 m w 2 .m wwvo 0o. Q 0mm April 21, 159

Original Filed Sept. 6. 1949 -BY% ./m

ATTORNEY April 21, 1959 I w. DE BACK A I 2,882,945

FRUiT PREPARATION MKCHINE Original Filed Sept. 6, 1949 I 14 Sheets-Sheet 4 m Xv O m E Q N 1 N3 9 g P -a 0- 5 o a 0] 7 L0 mm 06) m 000 M NN v g I E m l w 39 r- 6 m d N 22 2'2 INVENT0R$ W ll-I. MM DE 8d CK 3Y1. W0 PUG6INELLI av A low 5*.

ATTORNEY A ril 21, 1959 W. DE BACK ETAL FRUIT PREPARATION MACHINE Original Filed Sept, 6, 1949 14 Sheets-Sheet 5 INVENTORS WILLIAM DE BACK mo. @0- v2 .0. w: v: 0: a: .N. #N. oo m9 mm. W 0 mm. on. mm. bm .n. .m.

SYLVID PUCCQIELLI 5y ATTORNEY Aprifl 21, 195

w. DE BACK ET AL 2,882,945

FRUIT PREPARATION MACHINE Original Filed Sept. 6, 1949 14 Sheets-SheetB INVENTORS WILLIAM 0E Maw SYLV/O PUGC/NELLI BY MM ATTORNEY April 21, 1959 w. DE BACK ETI'AL 2,382,945

FRUIT PREPARATION MACHINE Original Filed Sept. 6, 1949 14 Sheets-Sheet 7 INVENTORS WILLIAM DE BACK SYL VIO PUCGINELLI ATTORNEY W. DE BACK ETAL FRUIT PREPARATION MACHINE Original Filed Sept. 6, 1949 April 21, 1959 14 Sheets-Sheet 8 INVENTORS WILLIAM 0E ucx FI l3 1 III s'rl. v/a PUCCINELLI ATTORNEY April 21, 1959 w. DE BACK El AL I 2,332,945

. FRUIT PREPARATION MACHINE Original Filed Sept. 6, 1949 l4 Sheets- Sheet 10 INVENTORS WILL/AM '05 BACK- SYLWO PUCCINELLI ATTORNEY w. DE BACK ETAL FRUIT PREPARATION MACHINE.

Original Filed Sept. 6. 1949 April 21, W59 2,882,945

14 Sheets-Sheet 11 INVENTORS WILL MM 05 EAGK 5' YL W0 PUQCl/VE LL I ATTORNEY A ril 21, 1959 w. DE BACK Em. 21,882,945

FRUIT PREPARATION MACHINE Original Filed Sept. 6, 1949 1 l4 Sheets-Sheet 12 INVENTORS amunu a: new s'YLv/a Pl/66/IUELLI ATTORNE April 21, 1959 w. DE BACK ET AL 2,882,945

FRUIT PREPARATION MACHINE Original Filed Sept. 6,

14' Sheets-Sheet 1s INVENTORS WILL/AH 05 850K SYLWQ PUC OMELLI Hu n W ATTDRNEY April 21, 1959 w. DE BACK ETAL 2,882,945 FRUIT PREPARATION MACHINE Original Filed Sept. 6, 1949 (9 4 Sheets-Sheet 14 INVENTORS WILLIAM DEUBACK YLVIO PI/CCINELLI ATTORNEY United States Patent FRUIT PREPARATION MACHINE William de Back, St. Nicolas-Waes, Belgium, and Sylvia Puccinelli, San Jose, Calif., assignors to Food Machinery and Chemical Corporation, San Jose, Callfl, a corporation of Delaware Original application September 6, 1949, Serial No. 114,168, now Patent No. 2,699,191, dated January 11, 1955. Divided and this application January 7, 1955, Serial No. 480,423

14 Claims. (Cl. 146-40) This invention appertains to fruit preparation machines, and relates more particularly to improvements in mechanism for preparing fruit, such as pears, for canning or drying.

This application is a division of our co-pending application, U.S. Serial No. 114,168 filed September 6, 1949, now Patent No. 2,699,191, issued January 11, 1955.

An object of the present invention is to provide an improved high speed fruit preparation machine.

Another object is to provide means for transferring fruit from an impaled condition on a cyclically moving stemming tube onto a superposed halving, calyx trimming, and seed cell severing mechanism, the superposed mechanism moving oongruently with the stemming tube through a portion of its cycle of movement.

Another object is to provide a fruit preparation machine with improved splitting, trimming and coring facilities.

Another object is to provide means for performing stemming and seed cell severing operations upon fruit in a manner to insure removal of the stem and seed cell from the fruit after it has been prepared.

Another object is to provide means for mounting a calyx trimming knife and a seed cell removing knife for simultaneous rotation in opposite directions above relatively eccentric axes and by similarly relatively eccentric gears.

These and other objects and advantages of the inventionwill become apparent from the following description-in conjunction with the accompanying drawings in which:

i Fig. 1 is a view in perspective of the drive or peeling side of a fruit preparation machine embodying the invention.

Fig. 2 is a perspective of the fruit ejecting side of the machine, the view illustrating the side opposite to that shown in Fig. 1.

Fig. 3 is an enlarged plan of the machine.

Fig. 4 is a vertical section of the upper half of the machine taken along line 4-4 of Fig. 3.

Fig. 5 is a vertical section of the lower half of the machine taken along the same line 4-4 of Fig. 3.

Fig. 6 is an enlarged fragmentary section taken in the same plane as Fig. 4 and showing a portion of a stemming tube turret, a stemming tube bushing being shown in section.

Fig. 71s a fragmentary section taken along line 7-7 of Fig. 16 showing gripping jaws and associated parts for transferring peeled pears onto a splitting knife.

Fig. 8 is a fragmentary bottom section taken along the line 8-8 of Fig. 16 showing the under side of the pear splitting knives and gripping jaws, the jaws being shown in open condition.

Fig. 9 is an enlarged fragmentary perspective of the lower end portions of a pair of coaxial butterfly'levers.

Fig. 10 is a view, similar to Fig. 9, showing one of the levers offset axially upwardly from the other.

"ice

Fig. 11 is a view similar to Fig. 8 but with the gripping jaws closed over pears which have been drawn up by the gripping jaws onto the splitting knives.

Fig. 12 is an enlarged detail section along line 12-12 of Fig. 11, showing the universal pivotal mounting arrangement for the gripping jaws.

Fig. 12A is a section taken on line 12A-12A of Fig. 12.

Fig. 13 is an enlarged fragmentary horizontal section taken along line 13-13 of Fig. 17, showing a pair of gripper jaw bracket support arms, the end portions thereof being broken away.

Figs. 14 and 15 are similarly enlarged perspective views of the bracket support arms shown in Fig, 13.

Fig. 16 is an enlarged fragmentary vertical section along the line 16-16 of Fig. 21 showing a splitting blade, with associated fruit gripper and associated seed cell severing and calyx trimming mechanism.

Fig. 17 is a further enlarged fragmentary vertical section taken along the line 17-17 of Fig. 19.

Fig. 18 is an enlarged fragmentary section taken along lines 18-18 of Fig. 17.

Fig. 19 is a fragmentary elevation of one coring and splitting station looking in the direction of the arrows 19-19 of Fig. 16. v

Fig. 20 is an enlarged fragmentary section along lines 20-20 of Fig. 17.

Fig. 21 is an enlarged fragmentary plan view of the splitting, seed cell severing, and calyx trimming station of the machine taken in the direction indicated by the arrows 21-21 of Fig. 16, a portion of a segmental bracket for actuating the seed cell severing and calyx trimming knives being broken away. 7

Before entering into a detailed description of the illustrated embodiment of the present invention, the following brief description will assist in an understanding of the general arrangement and operation of the machine. Throughout the present description of the machine, the words outwardly and. inwardly and words of like import will means radially outwardly or inwardly relatively to the central vertical axis of the machine, while forwardly and rearwardly and words of similar import will mean forwardly or rearwardly with respect to the rotative direction of the continuously rotating stemming tube turret. The terms clockwise" and counterclockwise indicate the direction of rotation as viewed from above the machine.

A fruit feeding station A (Figs. 1, 2 and 3) at which an operator stands and feeds fruit into a machine two at a time, is adapted to receive and support containers,- or lug boxes as they are called, of the fruit to be prepared, in this instance pears, from an ordinary roller conveyor B. A number of lug boxes are kept constantly at hand on the conveyer, so that as soon as one is emptied another will be immediately available. It will be understood, of course, that any automatic feeding mechanism may be substituted for the hand feeding arrangement illustrated. Such a mechanism is shown, for example, in the patent to Albert R. Thompson, No. 2,596,798.

The feeding station A has two feed cups to receive the pears, stem end down, from the operator. These feed cups are in fruit receiving condition practically all. of the time, so that it is not necessary for the operator to maintain a closely timed synchronism of operation with the machine. This tends to speed up operation and greatly reduces operator tenseness and fatigue. The stem ends of the pears are trimmed oif in the feed cups just prior to their release therefrom.

A continuously rotating stemming tube turret C (Fig.

v4) is mounted directly beneath the feed cups. A fruit transfer mechanism D (Figs. 1 and 4) is mounted for is so timed with relation to the intermittent operation of the feed mechanism A and the continuous rotation of the stemming tube turret C as to position the transfer means directly beneath the feed cups when they open to discharge their fruit. The transfer means receives the fruit thus dropped, and then, after aligning the fruit axially, moves the fruit slowly downwardly and swings it in axially aligned congruent relation to impaled condition on a stemming tube (Fig. 4). Thereafter, the transfer means releases the fruit, is raised clear of the fruit, and again is returned to fruit receiving position beneath the feed cups in time to receive the next fruit discharged therefrom.

After a pear has been impaled on a stemming tube, the tube is tilted rearwardly from the vertical position, which it occupies during the transfer to the stemming tube stage of the cycle, to an axially horizontal position. In this horizontal position the stemming tube, and the pear im paled thereon,-are slowly rotated about their common axis. While thus rotating, the pear is carried past a peeling stage E, Fig. I, where successive spiral strips of peel are cut lengthwise from the fruit.

After passing the peeling stage of the cycle the stemming tube and the pear thereon again are swung to axially upright position, and pass beneath a combined fruit halving or splitting, seed cell severing, and calyx trimming station F (Fig. 2). This latter station is mounted to oscillate back and forth in timed relation with the opera tion of the fruit transferring mechanism D and the continuously rotating stemming tube turret C.

A fruit gripping means G (Fig. 2) is mounted to oscillate with the transfer means D and the splitting, calyx trimming and seed cell severing station F. The gripping means reaches down and grips the pears on the stemming tubes as they pass beneath the splitting station F, and draws the pears upwardly onto station F where the halving, seed cell severing and calyx trimming operations are performed.

Thereafter the fruit halves, now completely prepared, are released by the gripping means G and are ejected from the machine. This completes the fruit preparation cycle, and immediately thereafter the now upright stemming tubes, from which the pears were removed by the gripping means, again pass into alignment with the transfer means D whereupon the above cycle is repeated.

The present divisional application is particularly concerned with the fruit splitting, seed cell severing, and calyx trimming apparatus at station F. The fruit feeding and stem end gaugingmechanisms at station A are completely disclosed in the previously mentioned Patent No. 2,699,191, as is also the stem end trimming mechanism, the fruit transfer andimpaling mechanism, the stemming tubes and the stemming tube turret, the peeling mechanism, and the control mechanism. Theparent applicationshould be referred to for a comprehensive description and complete illustrations of the entire machine.

Frame structure and drive The general arrangement of the machine and its principal operating assemblies and the manner of driving these principal assemblies by mechanical drive means will now be set forth. It will facilitate an understanding of the illustrative embodiment of the invention if it is borne in mind that the'mechanisms pertaining to the orbital travel of the fruit around the machine are driven mechanically, while the mechanisms pertaining to fruit feeding, impaling, calyx trimming, seed celling, splitting, and ejecting are principally operated by pneumatically actuated mechanisms controlled by cam actuated valves operated in timed relation with the mechanical driving mechanism. While having certain advantages, it is obvious, of course, that 4 the pneumatic operation of the illustrated embodiment of the invention could be replaced, by a designer of ordinary skill, with mechanical actuating means such as the usual links, levers, cams, gears and the like employed for such purposes.

It will be of assistance in visualizing the machine as a whole to join the lower broken line of Fig. 4 with the upper broken line of Fig. 5. This will provide a composite vertical sectional view of the entire machine along the line 4-4 of Fig. 3.

The present machine has a three part supporting base and drive housing (Figs. 1, 2 and 5) comprising a circular lower base portion 101 of inverted cup shape with supporting legs 102 thereonr A substantially cylindrical intermediate base portion 103 is mounted on the lower base portion 101, and an upper cup-shaped base portion 104 is mounted on the upper edge of the intermediate portion 103. An oil sump and bottom closure plate 105 is secured to an inwardly projecting flange 107 in the lowermost base portoin 101.

A circular horizontal waste trough 108 (Fig. 4), for catching the cores and peelings produced during the operationof the machine, surrounds the upper end of the uppermost base portion 104 and forms an integral part thereof. A lug box table 109 (Fig. 4), for supporting lug boxes 110, indicated in dotted lines in Fig. 1, is mounted on a supporting bracket 111, which is secured by cap screws 112 (Figs. 4 and 5) to a side of the intermediate base portion 103, and also to bosses 113 provided on a side of the annular waste trough 108. This bracket 111 also supports a fruit feed table 114 formed integrally with the feed table 109. A pair of feed cup assemblies 115 are mounted on the feed table.

The top closure plate 116 (Fig. 5) of the lowermost base portion 101, has a downwardly extending boss 117 formed centrally thereof. This boss has an internally threaded hole axially therethrough into which a threaded bearing support bushing 118 is screwed. The bushing is secured in adjusted position by a set screw 119. The bushing 118 has the annular inner race of a roller hearing 121 fitted into an annular recess around its upper end as shown in Fig. 5. The roller bearing 121 is mounted rotatably to support the lower end of a barrel cam 122 which vertically reciprocates a fruit transfer head (Fig. 4) of the transfer mechanism D.

The barrel cam 122 is a composite member, as best shown in Fig. 5, and comprises a lower cylindrical cam portion 123 formed integrally with a lower driven gear portion 124. The lower cylindrical cam portion has a cam face 125 formed on the upper edge thereof. A complementary upper cylindrical cam portion 127 has a lower cam face 128 thereon spaced from the cam face 125 on the lower cam portion 123 by a distance sufficient to permit a cam follower roller 129 to operate between these two cam faces. The upper and lower barrel cam portions 123 and 127 are secured rigidly together in axially aligned adjusted relation; by a surrounding cylindrical sleeve 130 which is secured to the upper and lower cam portions by screws 131. The upper barrel cam portion 127 is journalled on a bushing 132 which is mounted on the lower projecting end of a stationary, tubular, central column 133 (Figs. 4 and 5).

The tubular central column 133 has a press fit in an upwardly projecting central boss 134 formed on the bottom plate of the uppermost base portion 104. The column is secured against rotation in this boss by a key 135 (Figs. 4 and 5).

A pair of stationary annular cam tracks 137 and 138 (Figs. 4 and 6) for controlling the tilting movements of stemming tubes 139 as they travel in a circular horizontal orbit around the machine, are mounted on the upper and lower ends, respectively, of an annular hub 140. The hub 140 is mounted on the stationary tubular central column 133, as shown in Figs. 4 and 6, and is secured thereto by a locating key 141 (Fig. 4), and a jam b nut 142 and a bolt 145 (Fig. 6) which are inserted in a hole 144 drilled transversely through the hub. The hole opens substantially tangentially into the axial bore of the hub. The jamb nut and sleeve are drawn into tight frictional engagement with the stationary central column 133 by a bolt.

A ring 150 (Fig. 4), having a segmental toothed rack 151 cut in the upper side thereof, and a stemming tube gear locking ring 152 (Figs. 4 and 6) are bolted in superposed relation on the lower cam track 138. An abutment ring 153 (Figs. 4 and 6) is pressed onto the slight- 1y reduced upper end of the hub 140 to seat in the shoulder formed by the ofiset between the lower and upper portions of the hub. The abutment ring 153 is of hard smooth metal such as heavy-chrome-plated steel, and is positioned so that the inner ends of stemming tube drive shafts 154 ride along it to receive the thrust of these shafts created upon their rotation by a worm gear mechanism 156.

A stationary mounting flange 155 (Figs. 4 and 6) is clamped tightly around the upper end of the stationary central column 133, and a stationary peeling arm pivot support plate 157 (Fig. 4) is secured to this flange by screws 158. A grease seal retaining washer 159 is secured in place on the plate supporting flange 155 by screws 160. The peeling arm pivot support plate 157 (Fig. 4) fixedly supports the upper ends of a plurality of upright peeling arm pivot pins 161 which are mounted between this stationary plate and the outer marginal edge of the annular waste trough 108. The peeling arms and their associated peeling mechanism are described in the above-mentioned parent application.

From the foregoing it will be apparent that the central column 133, being securely fixed in the boss 134 of the uppermost base portion, will remain stationary during the operation of the machine; as likewise will the annular hub membed 140, the thrust ring 153, the upper and lower stemming tube control cams 137 and 138 mounted on the hub 140, the stemming tube rotary drive rack ring 150, the stemming tube locking ring 152, and the peeling knife pivot support plate 157.

The machine is provided with a stemming tube turret 170 (Figs. 4 and 6) which comprises interconnecting upper and lower turret portions 171 and 172. The lower turrent portion 172 is journalled on a bearing bushing 173 on the central column 133, and is supported on a thrust washer 174 (Fig. 4) on top of the boss 134.

The lower turret portion 172 has an upstanding marginal wall 175 around it, on the outer side of which are machined twelve similar, equally spaced, flat, stemming tube mounting faces 177 (Fig. 6). The wall 175, centrally of each of these faces, has openings 178 therethrough to receive twelve stemming tube mounting hubs 179. Each stemming tube hub has a marginal mounting flange 180 formed integrally therewith which overlies and seats on the face 177 around the hole in which the hub 179 is mounted. The flange 180 is secured to the turret wall by cap screws 181.

A rubber waste trough wiping blade 176 (Fig. 4) which conforms to the shape of the waste trough 108 is fastened to a radially projecting bracket 168 on the lower stemming tub-e turret portion 172 to sweep peelings and cores produced by the operation of the machine around the trough and out through a waste discharge opening 169 (Fig. 3).

The upper stemming tube turret portion 171 (Figs. 4

and 6) comprises a domed plate or cover portion 182 which is secured to the upper edge of the marginal wall 175 of the lower turret portion 172 by screws 183. The dome cover plate 182 has a hub portion 184 which is journalled on a bearing sleeve 185 on the stationary column 133. A ring gear 162 (Figs. 4 and 6) for driving a. pneumatic control valve mechanism, is mounted on the upper stemming tube turret member by screws 163.

The entire stemming tube turret assembly is rotated as a unit at a constant speed in a counterclockwise direction (Fig. 3) during operation of the machine 'by means of a gear mechanism which is indicated generally in Fig. 4 by the reference numeral 186. This gear mechanism is fully disclosed in the above-mentioned parent application. As is also disclosed in said parent application, the gear mechanism drives the barrel cam 122, which is arranged to reciprocate the fruit transfer head in a vertical direction, and the gear mechanism also drives a face cam (not shown) which is arranged to oscillate a support tube 200 on which a fruit splitting head 201 is keyed. The transfer head 120 is oscillated by the splitting head 201 through a drive connection 202 (Fig. l) which permits vertical reciprocation of the transfer head during oscillation.

During operation of the driving motor, the stemming tube turret is rotated continuously at a constant speed, the splitting head 201 is oscillated back and forth, and the transfer head 120 will be reciprocated vertically while being oscillated in synchronism with the splitting head.

Pear gripping mechanism As previously explained, as the stemming turret 170 rotates, a pear is impaled on each upright stemming tube, and the stemming tube is moved to a horizontal position and carried past a plurality of peeling heads. After passing the last peeling head, each tube is again swung to upright position and held firmly in upright position as a pair of the stemming tubes are brought into vertical alignment with a pair of fruit halving or splitting blades 'by the combined rotative action of the stemming tube turret, and the lateral oscillation of the splitting and transfer heads.

Pear gripping means 240 (Fig. 8) are provided to grip the pears on each succeeding pair of stemming tubes as they are brought into vertical alignment with the splitting blades, and to move the two pairs thus gripped upwardly onto the splitting blades. Each such pear gripping means (Figs. 7 through 11) is mounted on the vertically reciprocating and laterally oscillating transfer head 120, and comprises two similar,'but opposite, gripping pad support brackets 241 and 242. Each gripping pad support bracket comprises a mounting hubportion 237 (Fig. 8) with diagonally disposed pad supporting arms 238 and 239. An upwardly extending anchoring pin 303 is provided on the inner end of an extension 234 of the inner arm portion 239 for holding the brackets 241 and 242 against pivotal movement when a clutch is actuated in a manner to be described later herein.

Each of the gripping pad mounting brackets 241 and 242 has a pair of fruit gripping pads 243 mounted thereon. Each gripping pad (Fig. 12) comprises a soft, rubber facing 244 molded onto a supporting backing block 245 of rigid material such as plastic or metal. The gripping face of the rubber facing 244 is curved to conform to the shape of a pear when gripped thereby, and is grooved transversely as at 247 to reduce slippage. Each backing block 245 has a semispherical recess therein in which is inserted the ball end of a mounting stud 248.

A cap 249 fits over the back of the backing block 245 and is secured thereto by screws 250. The cap 249 has a semispherical recess therein complementary to that in the backing block to fit over and retain the ball end of the mounting stud. A cone shaped opening 251 in the cap 249 for the shank of the stud permits limited universal pivotal movement of the gripping pad assembly on the stud. The ball end of the stud has a slotted hole 252 transversely therethrough and a pin 253 is inserted through the slotted hole 252 in the ball end of the mounting stud to prevent rotation of the pads and to limit pivotal movement of the ball in the socket. The ends of the pin 253 (Fig. 12) fit into grooved complementary recesses 253a and 253b (Fig. 12A) provided in the mounting block and in the cap, respectively, to grip the ends of the pin and hold .it against displacement. The shanks of the mounting studs 248 are threaded, and are screwed into similarly threaded holes in the mounting brackets 241 and 242 (Figs. 11 and 12). Locknuts 254 secure the studs in adjusted position. A down-limit stop pin 255 (Fig. 12) for limiting the downward pivotal movement of each gripping pad is screwed into a threaded hole in a downwardly extending ear 257 (Fig. 16) two of which are provided on each bracket 241 and 242 below the mounting holes for the gripping pads. A locknut 258 (Fig. 12) secures the down-limit stop pin 255 in threaded adjusted position.

The similar but oppositely formed and positioned gripping pad support brackets 241 and 242 of each pair thereof are pivotally mounted on studs 259 and 260 (Fig. 7) mounted on the outer or free ends of a pair of bracket support arms 261a and 2620! (Figs. 13, 14 and 15) to extend downwardly therefrom. One pair of bracket support arms 261a and 262a are shown disassembled in Figs. 14 and 15, and assembled in the sectional view of Fig. 13. In Fig. 13, the outer or free end portions of the bracket support arms are broken away.

Referring first to the bracket support arm 261a shown in Fig. 14, a bracket supporting arm portion 263 thereof extends substantially tangentially outwardly from a circularly curved wall portion 264 and has a drilled boss 266 to receive a pivot pin for pivotally mounting the hub 237 of the gripper pad support bracket 242 thereon. The curved wall portion 264 is mounted concentrically on the marginal edge of a clutch disk portion 265 having a central mounting hole 267 therein. A spring attaching post 268 is welded to extend downwardly from the under side of-the margin of the clutch disk portion 265 at its juncture with the arm portion 263.

A bracket positioning coil spring 269 (Figs. 8, 11 and 16) is hooked in tension between this post 268 and a hook 270 mounted on the inner end of the pad supporting bracket 242 pivoted on the arm 261a. The tension of this spring resiliently urges each pad supporting bracket toward a normal position of substantial alignment with its supporting arm. An actuating arm portion 271 (Fig. 14) extends inwardly, and substantially tangentially, from the arcuate wall portion 264 in the opposite direction from the bracket supporting arm portion 263.

The clutch disk portion 265 of the bracket support arm 261a is adapted to rest on, and to be supported by, a generally similar clutch disk portion 272 of the other bracket support arm 262a (Fig. 15) of the pair. The clutch disk portion 272 of this other bracket support arm 262a has a plurality of holes 273 therein for receiving rivets 274 (Fig. 17) which secure an annular, metal, pressure transmitting ring 275 to the under side of the clutch disk portion 272. This pressure transmitting ring 275 is adapted to have frictional clutch engagement with a bracket securing clutch disk 300 (Fig. 17) which is mounted beneath it when the parts are pressed together in a manner to be described later herein. The clutch disk portion 272 (Fig. 15) of the second bracket supporting arm 262a has a radially extending actuating ear 277 thereon which is adapted to be engaged by one of a pair of pneumatically actuated butterfly levers to be describeclin detail later herein. 1

A downwardly extending spring attaching post 278 (Figs. 8, 11 and 15), similar to the spring attaching post 268 on the bracket supporting arm 261a, shown in Fig. 14, is mounted peripherally of the clutch disk portion 272 at the juncture of the bracket supporting arm portion thereof with an arcuate wall portion 279 (Fig. 15) for attaching a second bracket positioning spring, 276 (Fig. 8) to a hook 280 mounted on its associated pad mounting bracket.

The pair of bracket support arms 261a and 262a, illus trated in detail in Figs. 13, 14 and 15, are similar to, but are constructed and mounted oppositely from, the second pair 261 and 262 thereof (Figs. Sand 11). The pair illustrated in detail in Figs. .13, 14, and 15 would,

therefore, comprise the lowermost pair 261a and 262a shown in Fig. 8, while the upper pair 261 and 262 in this Fig. 8 would be constructed and assembled exactly opposite to those of the upper pair. Such structural reversals are of course common. practice in machine designand will be clear from the above disclosure to those familiar with the art.

The clutch disk portions 265 and 272 of the bracket support arms 261a and 262a are mounted for pivotal movement on the lower end portion of a central downward tubular extension 285 (Fig. 17) of the lower head 287 of a metal clutch actuating bellows 288. A spring retaining clip 289, mounted in an annular groove near the lower end of the tubular downward extension 285, supports and limits the downward movement of the lowermost clutch disk portion 272 of the bracket support arm 262a. The downward tubular head extension 285 is inserted, with a tight press fit, through the axial bore of a. spool-like clutch hub 290. The clutch hub 290 has an upwardly extending central locating and mounting boss 291 thereon, which is inserted, also with a tight press fit, into a hole in the transfer head 120. The lower bellows head 287 and its integrally formed, tubular, downward extension 285, and the spool-like clutch hub member 290, thus are securely connected to the transfer head and to each other. The lower bellows head 287 additionally (Figs. 7 and 16) is secured to the transfer head by three screws 292, which pass through ears 293 extending marginally from the lower bellows head 287 and are screwed into threaded holes in the transfer head. The walls of the bellows 288 (Fig. 17) comprise a usual deeply corrugated or roll formed tubular inner sleeve 294, and a similarly corrugated, outwardly spaced, outer sleeve 295, both of the corrugated sleeves being of thin, springy metal, such as bronze. Both corrugated bellows sleeves are brazed to the lower bellows head 287 and to an upper bellows head 297, to have air tight, sealing connection therewith. A usual actuating fluid supply tube 298 (Fig. 7) is connected by a usual compression fitting 299, to open into the sealed annular space between the two corrugated sleeves for actuation of the bellows. A pair of similar disk-like pad mounting bracket clutch plates 300 and 301 (Figs. 8, l1, l6 and 17) for anchoring the pad supporting brackets 241 and 242 in pear gripping position, are pivotally mounted on the lower end of the tubular extension 285 of the lower bellows head 287 below the spring clip 289. Each of the gripping pad bracket anchoring disks 300 and 301 (Figs. 8 and 11) has a bifurcated arm 302 projecting radially therefrom. These bifurcated arms 302 are each adapted to receive, between the bifurcations thereof, the upwardly extending pin 303 (Fig. 16) formed on the inner end of each of the pad supporting brackets 241 and 242.

A small, radially projecting ear 304 (Figs. 8, 11 and 16) also is provided on each of the bracket anchoring disks 300 and 301, to lie on the other side of the spring attaching post 278 or 268 from the bifurcated arm 302, and thus to limit rotative movement of the bracket anchoring disks 300 and 301 on which the ears 304 are provided. The bracket anchoring disks are identical to each other, but are mounted oppositely to each other in pairs, as shown, for example, in Fig. 8. Thus the two bracket anchoring disks 300 and 301 of each pair thereof have their bifurcated arms 302 and ears 304 disposed oppositely to each other and with the downwardly extending spring attaching posts 268 and 278 on their associated bracket support arms 261a or 262a therebetween. These bracket anchoring disks 300 and 301 are interposed (Fig. 17) between the lower clutch disk portion 272 of the bracket supporting arm 262a, and the disk-like head 305 of a bellows-actuated pressure transmitting or clutch actuating member 307. I

The clutch actuating member 307 has an upwardly extending stem 308 which is slidably inserted through the axial bore of the tubular downward extension 285 of the lower bellows head 287. The upper portion of the stem 308 is threaded, and is screwed through the internally threaded bore of a flanged sleeve 309 (Fig. 17) inserted through a central hole in the upper bellows head 297. A spring clip 310, is inserted in an annular groove in the marginal wall of a recess in the upper bellows head 297, overlies the flanged sleeve 309 and retains it in position therein. A split clamp fitting 311 (Fig. 17) is screwed onto the upper end of the stem 308 of the pressure transmitting member 307 and is clamped thereto by a clamping screw 312. An anchoring screw 313 (Fig. 17) passes through a radially extending ear 314 of the clamp fitting 311 and is screwed into a threaded hole in the upper bellows head 297 to anchor the stem 308 in adjusted position.

A clutch releasing coil spring 315 (Fig. 17) is mounted in an enlarged lower bore portion of the tubular lower bellows head extension 285, and is held in compression between the head 305 of the clutch actuating member, and the oifset in the bore, to urge the clutch actuating member 307 downwardly to free the bracket anchoring disks 300 and 301, and the clutch disk portions 265 and 272 of the bracket supporting arms 261a and 262a for pivotal movement on the tubular bellows head extension 285. The lower end of the flanged sleeve 309 (Fig. 17 mounted in the upper bellows head, by abutting against the upper surface of the lower bellows head 287, determines the downward limit of movement of the bellows head, and the clutch actuating member 307 connected thereto, under the thrust of the clutch releasing coil spring 315.

When the bellows 288 is subjected to internal pressure suflicient to overcome the thrust of the clutch releasing spring 315 and to move the clutch actuating member 307 forcibly upward, the bracket anchoring disks 300 and 301 and the clutch disk portions 265 and 272 of the bracket support arms 261a and 262a are gripped, clutch-like, between the head 305 of the clutch actuating member 307 and the bottom face of the clutch hub 290. It will be noted that the pressure transmitting ring 275, riveted to the under side of the lowermost clutch disk portion 272 of the bracket support arm 261a provides clearance for the spring clip 289 around the lower end of the tubular lower bellows head extension 285.

An arcuate leaf spring 320 (Figs. 13 and 17) for urging the bracket support arms 261a and 262a of each pair thereof toward each other into pear-gripping position, is adapted to be sprung to substantially circular form and fitted within the arcuate wall portions 264 and 279 of the bracket support arms 261a and 262a. The curved leaf spring 320 has outwardly bent end portions 318 and 319 which exert a separating thrust against the inner ends of the curved wall portions and thereby produce a torque which urges the bracket support arms 261a and 262a in opposite rotative directions toward each other into pear gripping relation.

The spring 320 is free to act only when the bellows 288 is in clutch releasing condition. At such time the bracket support arms are free to pivot on their tubular pivot support member 285. Therefore, when the bracket support arms are swung toward each other to pear gripping position, by the action of their arcuate leaf spring 320, if the pear to be gripped is offset laterally one way or the other on the stemming tube, the arms will pivot and grip the pear in this offset position without exerting any lateral centering tendencies thereon. This is an important advantage since it is desirable in transferring a pear from the stemming tube to a splitting blade that the pear be impaled on the splitting blade with the tubular cut made in the pear by the stemming tube on the vertical mid-line of the splitting blade, and with the lateral cuts made by the turning wings on the stemming tube in the cutting plane of the splitting blade.

For pivotally moving the arms of both pairs of bracket support arms simultaneously in opposite directions, and

against the force of the springs 320, toward their open, fruit releasing positions, a pair of co-axially pivoted, generally similar, but opposite, butterfly levers 321 and 322 are provided (Figs. 8, 9, l0, l1 and 16). One butterfly lever 321 comprises a tubular mounting shaft 323 (Figs. 9 and 10) with a lever block 324 welded to the lower end thereof so that one face of the lever block lies along a longitudinal mid-plane of the tubular shaft. The lower end of the lever block 324 extends below the bottom of the tubular shaft 323 and a lateral lever arm 325 with rounded free end is welded to the lower end of the lever block 324.

The other butterfly lever 322 comprises a rod mounting shaft 327 which is axially inserted for pivotal movement in the tubular shaft 323 of the first butterfly lever 321. The rod shaft 327 is of sufliciently greater length than the tubular shaft 323 to project upwardly above the tubular shaft when the parts are in fully assembled relation as shown in Fig. 16. A lever block 328, generally similar in size and shape to the first lever block 324, is welded onto the lower end of the rod shaft 327 with a face thereof disposed along a vertical mid-plane of the rod shaft, and is adapted to lie closely adjacent the midplane face of the first lever block 324 when the parts are assembled as shown in Fig. 9. The top of the second lever block 328 is notched out as shown at 329 (Fig. 10) to receive the lower end of the tubular shaft 323 freely therein, so that when the parts are moved axially into fully assembled relation as shown in Fig. 9, the top of the second lever block 328 will be at the same height as that of the first lever block 324 and the outer ends of the two lever blocks will be at the same radial distance from their common axis of pivotal movement. A second laterally projecting lever arm 330 and similar to the first lateral lever arm 325 is welded to the lower end of the second lever block 328.

The two butterfly levers 321 and 322, when moved axially into fully assembled position, as shown in Fig. 9, are inserted upwardly into the bore of a boss 331 (Fig. 16) on the transfer head for pivotal movement therein. A thrust collar 332 is secured in adjusted position on the tubular shaft 323 by a set screw (Fig. 16) to secure the tubular shaft 323 in adjusted position in the bore of the boss. A pair of split clamp type actuating arms 333 and 334 (Figs. 7 and 16) are secured on the upper ends of the tubular shaft 323 and the rod shaft 327, respectively. The actuating arms 333 and 334 extend substantially 111 opposite directions from each other, and their free ends are pivotally connected, by links 337 and 338, to the cross head 339 of a piston rod 340 of a pneumatically actuated cylinder 341 which is mounted on the transfer head 120. The cylinder 341 is of the double acting type. When the cylinder is operated to retract the piston rod 340, the cross head 339, links 337 and 338, and actuating arms 333 and 334, swing the butterfly levers 321 and 322 in opposite rotative directions about their common axis to bring the mid-plane faces of the lever blocks 324 and 328 together to the position shown in Figs. 9 and 11. When the pneumatic cylinder 341 is operated to extend the piston rod 340, however, to the position shown in Fig. 7, the-actuating arms 333 and 334 swing the butterfly levers 321 and 322 in opposite rotative directions to the position shown in Fig. 8.

The lever blocks 324 and 328 are located (Figs. 8, l1 and 16) directly between the inwardly extending actuating arms 271 on the two similar, but oppositely formed and located bracket support arms 261 and 261a. These bracket support arms 261 and 261a (Figs. 8 and 11) comprise the two center arms of the two oppositely constructed and mounted pairs of bracket support arms. The laterally extending round nosed lever arms 325 and 330 of the butterfly levers are located directly laterally exteriorly of the actuating ears 277 (Fig. 15) on the two similar but opposite clutch disk portions 272 of the two outer bracket supporting arms 262 and 262a.

1 When the butterfly levers 321 and 322 are in their relative positions of Fig. 11, the clutch actuating bellows 288 is unpressurized to release the pressure transmitting member 307 to free the clutch disk portions interposed between thehead of the pressure transmitting member and the clutch hub 290, the two arcuate leaf springs 320 swing their pairs of associated bracket support arms 261 and 262, and 261a and 262a, toward each other, moving the pad mounting brackets 241 and 242 and their supported fruit gripping pads 243 toward each other into pear gripping position. In this released condition of the clutch, the pad support brackets 241 and 242 also are free .for limitedpivotal movement against the aligning tension of their coil springs 276 and 269 to allow the pads 243 to conform to the shape of a pear gripped thereby.

. When the butterfly levers 321 and 322. are swung, by actuation of the pneumatic cylinder 341 to the relative positions shown in Figs. 7, 8 and 16, the bellows actuated clutch being released, the lever blocks 324 and 328 will beswung apart, engaging the actuating arms 271 on the bracket support arms 261 and 2610 and swinging them to the separated position shown in Fig. 8. This also swings the innermost, similar but opposite, bracket support arms 261 and 261a toward each other against the force of their associated arcuate leaf springs 320 (Fig. 13) to their fruit releasing positions shown in Fig. 8. Simultaneously the rounded ends of the laterally extending lever arms 325 and 330 of the butterfly levers will engage the actuating ears 277 on the clutch disks of the remote bracket support arms 262 and 262a and will swing these remote bracket support arms away from each other to fruit releasing position against the force of their curved leaf springs 320 (Fig. 8). The freedom for pivotal adjustment of the gripping pads on their brackets, of the brackets on their support arms, and of the support arms themselves permits the pear to be gripped firmly in any position in which it may be disposed on the stemming tube, the clutch action firmly locks the parts in that position, and the pear then is transferred in that same position onto the splitting blades. This arrangement is desirable since the pear should preferably be split on a plane including the axis of the hole produced therein by the stemming tube.

Fruit splitting and positioning mechanism A pair of fruit halving or splitting blade assemblies 350 and 351 are mounted on the splitting head 201 with the planes of their composite splitting blades disposed vertically and radially of the machine as shown in Fig. 8. Each composite splitting blade is mounted to lie along a central mid-plane of its associated pear gripping and elevating mechanism which is mounted on the transfer head. Since, as pointed out previously herein, the splitting head 201 and transfer head 120 are connected for synchronous swinging or oscillating movement by a drive connection 202 (Fig. l) these two heads maintain the pear gripping and transferring mechanism and their respective splitting blades in centrally aligned relation throughout the entire operational cycle of the machine. The two splitting blade assemblies 350 and 351 (Fig. 17) are mounted on the vertical outer faces of a pair of mounting flanges 352 provided on the splitting head 201. Both splitting blade assemblies, together with their associated rotating blade mechanisms for severing the seed cells, and trimming the calyx ends of the pears, are similar to each other, so one only thereof will be described in detail.

Each splitting blade assembly 350 (Figs. 16 and 17) hasa mounting member 353 with a horizontal flange 354 thereof extending inwardly beneath the lower end of the mounting flange 352. The blade mounting member 353 has an axially vertical tubular portion 355 formed integrally therewith. The tubular portion 355 extends downwardly below the inwardly extending lower flange 354. An outwardly extending, vertical, blade mounting flange 357 (Figs. 8 and 19) is formed integrally with the tubular body portion 355. A blade supporting face of this flange 357 is offset laterally from the vertical radial mid-plane of the tubular portion 355 by a distance equal to half the thickness of an outer "blade member 358, which is secured to the blade supporting face of the flange 357 by bolts 359. By this arrangement the outer splitting blade member 358, which is of substantial thickness in accordance with usual practice, has its median plane coincident with the radially disposed, vertical midplane through the tubular portion 355, of the blade mounting member.

The lower edge 360 (Fig. 17) of the outer blade portion 358 is disposed at an acute angle to the vertical and is sharpened to a cutting edge along the mid-plane of the blade. The upper end portion of the outer blade member 358, where it is mounted on the flange 357, is relatively narrow (Fig. 17); Below this narrower upper blade portion, the blade member 358 widens along an inwardly sloping edge 361. The slope of this edge conforms to the cutting angle of a rotary calyx trimming knife to be described later herein. The inner edge of the wider lower portion of the outer blade member 358 is vertical, except where it is curved inwardly at 362 to clear a rotary seed cell severing knife also to be described later herein.

An inner splitting blade member 363 (Fig. 17) is mounted on a vertical, inwardly extending flange 364 of the tubular portion 355 of the blade mounting member 353 below the horizontal mounting flange 354. This inner blade member 363 has edge conformations generally similar, but opposite, to those of the outer splitting blade member 358. An inwardly extending car 365 (Fig. 17) on the inner side of the inner blade member, is connected, by a screw 367, and band 368, to the downwardly projecting lower end of a tubular spring housing to be described later herein.

The calyx indentations of the pears are reamed out, and the seed cells are severed from the pears after the pears have been split and while the two halves thereof are still gripped in position on the splitting blades. Since the rotary orbits of the calyx trimming and seed celling knives are fixed, it is necessary that the pear halves be accurately positioned on the splitting blades to insure that the calyx and seed cell of each pear half will be located properly on the splitting blade when these knives are rotated. To insure proper positioning of the pear halves on the splitting blade, a pair of butt stops or gauging plungers 370 and 371 (Figs. 7, 8, l6 and 19) are mounted, one on each side of each composite splitting blade, to prevent the pears from being positioned too high on the splitting blade for the successful performance of the calyx trimming and seed cell severing operations. These butt stops 370 and 371 are similar, but opposite, to each other, so one only thereof will be described in detail.

The butt stops 370 and 371 (Figs. 16 and 19) comprise a vertical shaft portion 372 which is mounted for vertical sliding movement in a tubular portion 373 of a mounting bracket 374, which, in turn, is secured by screws to the upper face of the transfer head 120. A guide pin 375 (Fig. 16) is mounted transversely through the vertical shaft portion 372 of the stop, the edgesof the pin riding in vertical notches 377 in the upper end of the tubular bracket portion 373 (Fig. 16) to prevent rotative movement of the shaft portion 372 during vertical reciprocation of the stop.

A coil spring 378 surrounds the upper end of the vertical shaft portiton 372 and is held in compression between a cotter pin 379 mounted in a hole through the shaft portion 372 and the upper end of the tubular bracket portion. This spring 378 normally tends to raise the butt stop upwardly in its bracket. Upward slidable 

